the first lady, michelle obama also here. she said yesterday after the attack that it's a reminder in times of crisis we respond with courage and grit and selflessness. this is the spirit of boston, it is also the spirit of the country. again, jenna the president here to reassure this community and let them know that the country is behind them as they recover from that awful terror attack on monday? we expect to hear from the president as you mentioned, rick in about 45 minutes from now. we'll bring our viewers back to the cathedral when the president begins to speak. you've been doing so much reporting about this investigation. what is the latest you have, rick about those reported photos, about potential suspects? >> reporter: well, we know that federal law enforcement officials are telling fox that they do have images, and videos that they have been scanning and carefully scrutinizing, and they do have, they are telling fox, video of a possible suspect placing at least one of the devices at the scene, and there is debate w